FusionAuth
FusionAuth is the authentication and authorization platform engineered for developers who demand flexibility and control. Built from the ground up to integrate with any stack, every feature — from user registration to MFA and SSO — is exposed via a modern, well-documented API.
Support for every major identity protocol is included out of the box: OIDC, SAML, OAuth2, JWT, passwordless login, social sign-on, and more. Whether you’re building a greenfield app or retrofitting auth into a legacy system, FusionAuth adapts to your use case — not the other way around.
Need compliance? FusionAuth helps you meet GDPR, HIPAA, and COPPA standards quickly and reliably.
Deploy it your way: install on Linux, Windows, macOS, Docker, or Kubernetes — or go with FusionAuth Cloud, our managed SaaS hosting. No black boxes. No vendor lock-in. Just powerful, customizable auth that works the way you do.
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KrakenD
Engineered for peak performance and efficient resource use, KrakenD can manage a staggering 70k requests per second on just one instance. Its stateless build ensures hassle-free scalability, sidelining complications like database upkeep or node synchronization.
In terms of features, KrakenD is a jack-of-all-trades. It accommodates multiple protocols and API standards, offering granular access control, data shaping, and caching capabilities. A standout feature is its Backend For Frontend pattern, which consolidates various API calls into a single response, simplifying client interactions.
On the security front, KrakenD is OWASP-compliant and data-agnostic, streamlining regulatory adherence. Operational ease comes via its declarative setup and robust third-party tool integration. With its open-source community edition and transparent pricing model, KrakenD is the go-to API Gateway for organizations that refuse to compromise on performance or scalability.
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Zuplo
We are revolutionizing API & MCP management for everyone, from startups to enterprises.
- Add authentication, analytics, and developer documentation in minutes with our gitops powered deployment flow
- Move Fast: Add protection to your API quickly with built-in policies for API key authentication, OAuth, rate-limiting, and more
- Programmable: Zuplo is fully extensible; you can write code for your routing and custom policies directly at the gateway
- Global Deployment: Zuplo is built on the edge, and is deployed in 300+ data centers around the world with one git push. This makes multi-cloud deployments a first-class experience. Zuplo allows you to run different workloads on different clouds, while maintaining a uniform set of API policies.
- OpenAPI-native: Zuplo is the only gateway that runs OpenAPI directly. Use the OpenAPI ecosystem for your API and deploy it directly to Zuplo.
- Developer Portal: Zuplo generates beautiful documentation for your API. You can customize your docs using markdown, and developers can self-serve their API Keys right from your docs.
- MCP: You can directly generate hosted MCP servers from your OpenAPI and build custom MCP tools directly into Zuplo. We'll take care of the hosting and security.
- Monetization: Turn your services into API products. Zuplo allows you to build a self-service monetization flow for Usage-based or Subscription billing.
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Ambassador
Ambassador Edge Stack, a Kubernetes-native API Gateway, provides simplicity, security, and scalability for some of the largest Kubernetes infrastructures in the world. Ambassador Edge Stack makes it easy to secure microservices with a complete set of security functionality including automatic TLS, authentication and rate limiting. WAF integration is also available. Fine-grained access control is also possible. The
API Gateway is a Kubernetes-based ingress controller that supports a wide range of protocols, including gRPC, gRPC Web, TLS termination, and traffic management controls to ensure resource availability.
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